supply of overhauling kit for duplex check valveoverhauling kit for duplex check valve,overhauling kit for duplex check valve of m/s. faiveley make to part no.- 790039105 for air spring suspension system of emu coaches consisting of 4 (four) nos. items in set and conforming to rdsos specn. no.- c-k-407 (rev.-03), amendment-1 of september 2018. items are as (i) valve seat (sub assly.) to m/s. ftrtil part no.-039101000.qty/set:02 nos., (ii)compression spring to m/s. ftrtil part no.-039802000. qty/set: 02 nos, (iii) seal(26x33x1) to m/s. ftrtil part no.-039703000. qty/set: 02 nos., (iv) joint (19x33x1) to m/s. ftrtil part. no.-039704000. qty/set: 01 no. [ warranty period: 30 months after the date of delivery ]